Pt掺杂TiO<sub>2</sub>和TNTs光催化剂的特征及光催化产氢性能比较

刘楠楠; 骆尚廉; 孙宏雨; 邱春生; 王栋; 迟杰; 孙力平; 聂英进

doi:10.13205/j.hjgc.202002008

Pt掺杂TiO₂和TNTs光催化剂的特征及光催化产氢性能比较

doi: 10.13205/j.hjgc.202002008

刘楠楠^1,2,
骆尚廉^2,3,
孙宏雨²,
邱春生²,
王栋²,
迟杰^1, ,,
孙力平²,
聂英进⁴

1. 天津大学环境科学与工程学院, 天津 300350;
2. 天津城建大学环境与市政工程学院, 天津 300384;
3. 台湾大学环境工程学研究所, 台北 10673;
4. 天津创业环保集团股份有限公司, 天津 300381

基金项目:

天津市应用基础与前言技术研究计划重点项目"微波提升掺杂元素催化剂效能及其可见光Z型反应产氢"（14JCZDJC41100）；水体污染控制与治理科技重大专项（2015ZX07306001）。

详细信息

通讯作者:
迟杰,女,博士,教授,主要研究方向为污水处理与资源化。cjiechi@163.com

计量
- 文章访问数: 211
- HTML全文浏览量: 29
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2019-04-21

CHARACTERISTICS OF Pt DOPED TiO₂ AND TNTs PHOTOCATALYST AND COMPARISON OF THEIR PHOTOCATALYTIC PROPERTIES

1. Environmental Science and Engineering, Tianjin University, Tianjin 300350, China;
2. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China;
3. Graduate Institute of Environmental Engineering, Taiwan University, Taibei 10673, China;
4. Tianjin Capital Environmental Protection Group Company Limited, Tianjin 300381, China

摘要

摘要: 采用光沉积法掺杂Pt分别制备光催化剂Pt/TNTs和Pt/TiO₂，采用扫描电镜（SEM）、透射电镜（TEM）、X射线衍射（XRD）和紫外可见分光光度计（UV-Vis）对光催化剂进行表征，考察甲醇溶液浓度和Pt掺杂量对光催化产氢效率的影响，并在紫外光（320~400 nm）和可见光（400~700 nm）下比较TiO₂、TNTs、Pt/TiO₂和Pt/TNTs 4种催化剂催化甲醇溶液的产氢效率。结果显示：掺杂Pt可将光催化剂吸收波长红移至可见光区域，由于TNTs具有更大的比表面积，可负载更多的Pt，使电子有效转移至金属上，降低电子电洞对再结合的概率，并增加光催化效果；Pt/TNTs在紫外光和可见光的照射下，光催化效率均高于Pt/TiO₂，在最佳Pt负载量为1%（以质量分数计），甲醇溶液质量分数为20%的条件下，Pt/TNTs在紫外光和可见光下产氢率分别为2331，137.7 μmol/h。对比可知，本研究的可见光催化产氢系统具有很大的发展潜力。
- 光催化 /
- 钛纳米管 /
- Pt掺杂 /
- 氢 /
- 甲醇
Abstract: The photocatalysts Pt/TNTs and Pt/TiO₂ were prepared by doping Pt by photodeposition method. Characterization of the catalysts was conducted by SEM, TEM, XRD and UV-Vis spectrophotometer. The effect of methanol concentration and Pt doping content on hydrogen production was investigated. And the hydrogen production efficiency of TiO₂, TNTs, Pt/TiO₂ and Pt/TNTs under UV-light (320~400 nm) and visible light (400~700 nm) was compared. The results showed that Pt doping shifted the photocatalysts absorbance into the visible light region. Because of the higher specific surface area of TNTs than TiO₂, more Pt could be loaded, which effectively transfered electronholes to the genus, reduced the probability of recombination of electrons and electrons holes, and increased the photocatalytic effect. Pt/TNTs showed higher hydrogen production efficiency under both UV-light and visible light. Under Pt doping proportion of 1%(by mass), the hydrogen production rate of Pt/TNTs could achieve 2331 μmol/h under UV light and 137.7 μmol/h under visible light with 20% methanol solution(by volume). Compared with other literatures, the visible-light photocatalytic hydrogen production system in this study had resonable development potential.
- photocatalysis /
- TNTs /
- Pt doping /
- hydrogen /
- methanol

HTML全文

参考文献(22)

兰隽如,周晓琴,李子富,等. 硅胶负载TiO₂催化剂的制备与光催化效果[J]. 环境工程,2017,35(2):43-48.

李仁贵. 太阳能分解水制氢最近进展:光催化、光电催化及光伏-光电耦合途径[J]. 催化学报,2017,38(1):5-12.

NI M, LEUNG M K H, LEUNG D Y C, et al. A review and recent developments in photocatalytic water-splitting using TiO₂ for hydrogen production[J]. Renewable and Sustainable Energy Reviews, 2007, 11(3):401-425.

张文博,邓德明. g-C₃N₄/TiO₂复合光催化剂的制备及酸化改性[J]. 环境工程,2018,36(4):66-71.

谭璞,宋亚忠,吴剑铭,等. 二维共轭碳材料/TiO₂复合光催化剂制备及表征[J]. 工业催化,2019,27(2):49-53.

张学敏,周北海,袁蓉芳,等. 金属掺杂对纳米管TiO₂光催化去除水中罗丹明B的影响[J]. 环境工程,2015,33(增刊1):958-963.

MELO M D, SILVA L A. Visible light-induced hydrogen production from glycerol aqueous solution on hybrid Pt-CdS-TiO₂ photocatalysts[J]. Journal of Photochemistry and Photobiology a-Chemistry, 2011, 226(1):36-41.

姜建辉,邓臣强,曹钰,等. Y和Si共掺杂纳米TiO₂的制备及光催化性能[J]. 硅酸盐学报,2019,47(7):942-950.

ZHANG D F. Visible light-induced photocatalysis through surface plasmon excitation of platinum-metallized titania for photocatalytic bleaching of rhodamine B[J]. Monatshefte Fur Chemie, 2012, 143(5):729-738.

赵醒,胡彦杰,蒋洁超,等. 过渡金属原位掺杂Pt/TiO₂的喷雾燃烧制备及其CO氧化性能[J]. 华东理工大学学报(自然科学版),2018,44(6):823-830.

SHOKRI M, HOSSEINI M G, KHOSRAVI M, et al. The preparation of Pt-modified TiO₂ nanoparticles via microemulsions, and their application in photocatalytic removal of an azo dye[J]. Fresenius Environmental Bulletin, 2011, 20(4A):1063-1068.

OU H H, LO S L. Effect of Pt/Pd-doped TiO₂ on the photocatalytic degradation of trichloroethylene[J]. Journal of Molecular Catalysis a-Chemical, 2007, 275(1/2):200-205.

OBREGóN S, COLóN G. Improved H₂ production of Pt-TiO₂/g-C₃N₄-MnO_x composites by an efficient handling of photogenerated charge pairs[J]. Applied Catalysis B:Environmental, 2014,144, 775-782.

CHOWDHURY P, MALEKSHOAR G, RAY M B, et al. Sacrificial hydrogen generation from formaldehyde with Pt/TiO₂ photocatalyst in solar radiation[J]. Industrial & Engineering Chemistry Research, 2013, 52(14):5023-5029.

徐敬博,吴音,张思源,等. 稀土元素掺杂对TiO₂薄膜结构和光催化性能的影响[J]. 陶瓷学报,2019,40(1):14-17.

卢月洁,张美,毕先均. 微波水热法制备稀土元素铒掺杂TiO₂光催化剂及光催化活性[J]. 工业催化,2017,25(2):27-32.

GALINSKA A, WALENDZIEWSKI J. Photocatalytic water splitting over Pt-TiO₂ in the presence of sacrificial reagents[J]. Energy & Fuels, 2005, 19(3):1143-1147.

LIN Y M,REI M H. Process development for generating high purity hydrogen by using supported palladium membrane reactor as steam reformer[J]. International Journal of Hydrogen Energy, 25(3):211-219.

LI C L, YUAN J, HAN B Y, et al. TiO₂ nanotubes incorporated with CdS for photocatalytic hydrogen production from splitting water under visible light irradiation[J]. International Journal of Hydrogen Energy, 2010,35(13):7073-7079.

MAEDA K, HIGASHI M, LU D L, et al. Efficient nonsacrificial water splitting through two-Step photoexcitation by visible light using a modified oxynitride as a hydrogen evolution photocatalyst[J]. Journal of the American Chemical Society, 2010,132(16):5858-5868.

LV X J, FU W F, CHANG H X, et al. Hydrogen evolution from water using semiconductor nanoparticle/graphene composite photocatalysts without noble metals[J]. Journal of Materials Chemistry, 2012, 22(4):1539-1546.

YEH H M, LO S L, CHEN M J, et al. Hydrogen production from formic acid solution by modified TiO₂ and titanate nanotubes in a twostep system under visible light irradiation[J]. Water Sci Technology, 2014, 69(8):1676-1681.

施引文献

资源附件(0)

访问统计